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Correct if I'm wrong. You said that it installed from a DVD on UEFI mode, but didn't install from a USB created with an iso file.
The main difference is how these two are booted.
On the DVD you have \efi\microsoft\boot where you have the boot loader.
For a USB you have \efi\boot where you have the boot loader (bootx64.efi).
Try OPTION TWO from the link UEFI Bootable USB Flash Drive - Create in Windows.
My MB does have a option Legacy only or UEFI ONLY. I've installed with UEFI ONLY, using a USB with boot.wim and install.wim modified to add USB3 and SATA drives. I've created my USB using OPTION TWO and it installed without problems.

Correct if I'm wrong. You said that it installed from a DVD on UEFI mode, but didn't install from a USB created with an iso file.
The main difference is how these two are booted.
On the DVD you have \efi\microsoft\boot where you have the boot loader.
For a USB you have \efi\boot where you have the boot loader (bootx64.efi).
Try OPTION TWO from the link UEFI Bootable USB Flash Drive - Create in Windows.
My MB does have a option Legacy only or UEFI ONLY. I've installed with UEFI ONLY, using a USB with boot.wim and install.wim modified to add USB3 and SATA drives. I've created my USB using OPTION TWO and it installed without problems.

I take that back. This has been a learning process for me as well but the bottom line seems to be (at least reading the Microsoft article) that any uefi disc or USB will work on motherboards with Bios emulation only.
The difference between DVD and USB in this scenario is that with the USB you get the \EFI\Micosoft\Boot\BCD 0xc000000d error which is very misleading and with the DVD the setups hangs at the Windows screen. You'd think that the hanging of the video could be as simple as a driver injection but it's not. It's VGA.sys trying to load itself into an UEFI system.

Kind of like plugging in a 110volt appliance into a 220 volt system. It just doesn't work and it's not designed to work that way (at least according to Microsoft).
There might be diehards out there who are willing to modify the HAL but I'm not going there.

I'd like to add a few more notes here to provide some explanation as I understand it.

There are many great guides in this site, other sites in the Internet, or simply using your Windows experience on how to create a Windows 7 install from USB. This install is also UEFI capable.
All of these guides assume one thing which should be clear: They will work ONLY if the hardware supports BIOS emulation.
Since Microsoft is considering Windows 7 a legacy OS now, all of these guides on this site or other sites will work on any legacy hardware or on any new hardware which provide old BIOS legacy support.
And the list of manufacturers who make new hardware with BIOS legacy support is getting shorter everyday until they stop making them one day. At that point, all of the guides will not work on ANY new hardware.

Having said that, I have personally been using a Windows 7 Universal installer for at least 4 years now and I have included a lot of options to make it as compatible as possible with legacy hardware.
I am using Windows 8.1 setup files which provide great support for USB3 and MassStorage drivers and I'm using the $WinPeDrivers$ folder to inject further drivers into the install.wim DURING setup. https://support.microsoft.com/en-us/kb/2686316 . Because of these customizations my ISO is close to 9GB now which includes a 2GB driver library and a 3GB $OEM$ folder which includes a few applications like Office etc.
It has been working great and it will continue to work great for any hardware that supports BIOS emulation.

That was something new to me.
I'm always learning.
Thank you for sharing your experience with us.

Sure thing.
Quick question. Is the tenforums.com affiliated with this site and are there any guides here or in that site for a Windows 10 unattended setup or customizations?
I can put a guide together if needed and I figured Windows 10 might be a good start since Windows 7 has been exhausted at this point.
The only cool thing you can do at this point with a win 7 guide is to have Windows 8.1, Windows 8 and Windows 7 wim file which includes all OSes and customizations in one single huge ISO.
But since these are almost legacy now, Windows 10 would be the place to start.
I noticed you have been here for a while so wanted to ask if a Windows 10 guide is needed or if there are many other guides out there in the tenforums.com so I don't duplicate any efforts.
Thanks.

Sure thing.
Quick question. Is the tenforums.com affiliated with this site and are there any guides here or in that site for a Windows 10 unattended setup or customizations?
I can put a guide together if needed and I figured Windows 10 might be a good start since Windows 7 has been exhausted at this point.
The only cool thing you can do at this point with a win 7 guide is to have Windows 8.1, Windows 8 and Windows 7 wim file which includes all OSes and customizations in one single huge ISO.
But since these are almost legacy now, Windows 10 would be the place to start.
I noticed you have been here for a while so wanted to ask if a Windows 10 guide is needed or if there are many other guides out there in the tenforums.com so I don't duplicate any efforts.
Thanks.

Thank you gentlemen.
I did check that guide and it is very comprehensive and has nothing further to add.
One possible alternative could be to create a Windows 10 install which can be updated monthly. Since that is something that most home users don't care about and it's used in corporate environment I don't think it will be useful for people here.
The difference is that Kari has sysprepped that image and the image cannot be updated further unless u have a pre-sysprepped snapshot to update it and sysprepped it again.
The other method is without syspreping and you customize everything at runtime and you inject Microsoft updates monthly on Microsoft patch Tuesday.

Again I don't think it'd be useful here and looks like Kari has covered pretty much everything in his guide.

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